Dasyatis sephen   (Forsskal,  1775) (Fish)
Organism information awaits expert curation
Taxonomy
Kingdom:Animalia
Phylum:Chordata
Class: Elasmobranchii
Order:Rajiformes
Family:Dasyatidae

Image copyrights: The Nature Conservation and Aquatic Sciences Service

Description
Size: 325-390 mm

Color: Back leaden grey, darker towards tail and paler towards sides. Ventral surface white.

Disc somewhat quadrangular, length of disc 1.3-1.5 in its width. Head to hind margin of spiracle 2.9-3.1 in length of disc. Dental surface granular. Caudal and dorsal fins absent. Tail depressed with broad cutaneous fold ventrally beginning before a level from the insertion of caudal spine and ending below posterior third of tail. Serrated caudal spine inserted above second quarter of tail. Back granular with three central flattened tubercles in a row.

Remarks: Values in above description denote proportions.


Synonym (s)
Raja sephen Forskal, 1775
Dasyatis sephen Smith and Smith, 1963
Pastinachus sephen Munro, 1955
Trygon sephen Day, 1878
Dasyatis (Pastinachus) sephen Misra, 1969

Common Name (s)
• Madi
• Olavalan Thirandi
• Drab Stingray (English)
• Velugiri Tenkee (Telugu)
• Wolga Tenkee (Telugu)
• Adavalan Tiriki (Tamil)
• Adal Thirikkai (Tamil)
• Padaiyan Therandee (Malayalam)
• Goval Pakat (Marathi)
• Cow Tell Ray (English)
• Whip Ray (English)
• Boor
• Boovari
Economic Importance and Threats
Importance:  Commercial, Dangers
(Fisheries; the liver oil is of high vitamin A potency. From the skin of its back some of the 'shagreen' of commerce are prepared.
Ferocious, lashing its tail in defense, inflicting severe wounds.)

Ecology
Habitat:  Sandy, Muddy

Biogeography


• Bay of Bengal (Lat: 15) (Long: 90) INDIA
• Orissa, Chilika Lake (Lat: 19.77) (Long: 85.33) INDIA
• West Bengal, Digha Coast (Lat: 21.61) (Long: 87.53) INDIA
• Lakshadweep, Agatti INDIA
• Lakshadweep, Minicoy INDIA
• Red Sea
• Lakshadweep INDIA
• SEYCHELLES
• INDIA
• SRI LANKA
• Palk Bay INDIA
• Tamil Nadu, Gulf of Mannar INDIA
• Tamil Nadu INDIA
• Kerala INDIA
• Tamil Nadu, Porto Novo INDIA
• Gujarat INDIA

Literature Source(s)
  • Kasuya, T and Nishiwaki, M (1971) First record of Mesoplodon densirostris from Taiwan The Scientific Reports of the Whales Research Institute 24 43-56
  • Kuronuma, K and Abe, Y (1986) Fishes of the Arabian Gulf Fishes of the Arabian Gulf 1-356 Available at - ZOOR12500001320
  • Abbaasi, SA (1997) Wetlands of India-Ecology and Threats Discovery Publishing House,New Delhi II 1-182 Available at - NIO, RC Kochi
  • Goswami, BCB (1992) Marine fauna of Digha coast of West Bengal, India Journal of Marine Biological Association of India The Marine Biological Association of India, Cochin 34 115-137 Available at - NIO, RC Kochi
  • Jones, S and Kumaran, M (1980) Fishes of the Laccadive Archipelago The Nature Conservation and Aquatic Sciences Service, Trivandrum, Kerala 760 pp Available at - NIO, Goa
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at - http://www.marinespecies.org
  • Talwar, PK and Kacker, RK (1984) Commercial sea fishes of India ZSI, Calcutta 997 pp Available at - NIO, Goa
  • Hanfee, F (1999) Management of shark fisheries in two Indian coastal states: Tamil Nadu and Kerala Case studies of the management of elasmobranch fisheries. FAO Fisheries Technical Paper. No. 378 Rome, FAO Part 1 (11) Available at - http://www.fao.org/docrep/003/X2097E/X2097E14.htm#ch11.
  • Devadoss, P (1984) Nutritive values of sharks, skates and rays from Portonovo coast Indian Journal of Fisheries 31 (1) 156-161 Available at - http://eprints.cmfri.org.in/440/
  • Dholakia, AD (2004) Marine resources Fisheries and aquatic resources of India Daya publishing house 271-303 Available at - NIO, Goa

Page last updated on:2011-10-21

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